Demountable rim.



A. MENTZER.

DEMOUNTABLE RIM.

APPLICATION FILED mm. mm.

1 ,28 3,85 3 Patented Nov. 5, 1918,.

UNITED STATES PATENT QFFICE.

ALLEN MEN TZER, OF DULUTH, MINNESOTA.

DEMQUNTABLE RIM.

Specification 01 Letters Patent.

Patented Nov. 5, 1918.

' Application filed January 8, 1918. I Serial No. 210,830.

To all whom it may concern: v

c it known that I, ALLEN MENTZER, a citizen of the United States, residing at Duluth, in the county of St...Louis and State of Minnesota, have invented certain new and useful Improvements in Demountable Rims, of which the following is a specification, reference being had therein to' the accompanying drawing.

his invention relates to demountable rims for vehicle wheels, the primary object of the novel combination of parts being to improve the adaptability oi the rim.

Another object is to make a jointed rim of this character which cannot become wholly disconnected after being once assembled.

Other objects and advantages of the novel construction will appear in the further description-of the invention.

Referring to the accompanying drawing forming part of tis application and in which like reference characters indieatclike parts,

Figure 1 is a side elevation of one of the improved rims with a tire mounted thereupon.

Fig. 2 is a similar appears folded ready removal of a tire.

Fig. 3 is an enlarged sectionai view of the hinged ends of the two parts of the rim, and

Fig. 4 is a perspective view or" the opposite abutting ends of the two parts of the rim.

The rim is composed of two unequal areuately shaped sections which, when properly united with their cooperating ends abutting, form a complete circular rim. in transverse contour the rim may be of any ordinary form which is usually approximately U-shaped for the purpose of securely holding the tire casing therein.

In practice I prefer to make the two sections of the rim but slightly different in length say for example-in the ordinary automobile wheel the section 1 would be from four to six inches shorter than the section At the joints of separation indicated at 3 and t the sections are cut squarely oil and abut each other when assembled to form the complete circle of the rim.

The two sections are hinged together at the point e by there being a transversely elongated rectangular shaped opening 5 View of the rim as it for the reception or formed in the base of the rim of one of the dcsi red.

sections adjacent the end thereof, the edges of which hole parallel with the axis of the mm are incl ned, and diverge outwardly from the center of the rim. From the outer face of the rim is placed into the hole 5, a lug or dog 6 having a flaring head 7 formed at right angles to the body portion and which just fills the hole 5 snugly when there in but which can not under any circumstances be drawn through the hole inwardly. After this lug is placed body first, into the hole 5 it is brought up against the inner face of the abutting end of the other section and securely fixed thereto by suitable rivets 8, I have shown the lug as being fastened to the longer section 2, and the slot 5 is in the section 1, but this order may be reversed it fixed to one of the ends, said lug having a lip 10 upon its free end which fits into a slot 11 formed in the other end oi the rim. When this lip is in place in the slot in the. abutting end of the rim it is held locked therein by the overlapping lever 12 pivoted at 13 to the base of the rim adjacent the slot 11 and which may be turned to lock or unlock the engaging portions of the rim.

I have shown in one of the abutting ends of the rim a pair of elongated notches 14. which are for the reception of a tool such as a screw driver or end of a file for prying the ends of the rim either together or apart as desired.

By the manner as above described of pen manently hinging together the two sections of the rim they not become accidentally separated from each other and when the free end of the smaller section is slipped down inside of the free end of the larger section the pivotal point of the hinged ends or the sections is seen to be a considerable distance back from the point of separation of the sections.

This together with the fact that that portion of the lug 6 extending beyond the end of the section to which it is fixed will slip outwardly through the hole 5 will shorten the radial throw of the shorter section in respect to the longer section and thus allow the free end of the shorter section greater extent of freedom within the longer section.

As is evident this materially increases the adaptability of the rim to a tire and casing and results in a combination possible of manipulation with much less labor than 1n somewhat similar-types of rims heretofore known.

s I am aware that rims of-this nature have been divided into two sections somewhat as shown, but not with the novel form of binge herein disclosed and claimed and therefore have not proven wholly satisfactory. r

Having thus described my invention what I claim as new and desire to secure by Letters Patent is-- 1. The combination with a demountable rim divided into'two sections and having means for locking the free ends of the sections together, of a hinge permanently uniting the opposite ends of the sections said hinge comprising a hole through one section ad'acent the end thereof and a in se curely astened to and extending beyond the end of the other section and non-detachably held within the hole in the other section.

2. The combination with a demountable rim divided into two unequal arcuate sections and having means for holding the free ends of the sections normally abutting eacl: other of a hinge umting the opposlte ends the sections said hinge comprising a hole through the end of the shorter section and spaced :1 distance therefrom, a lug rigidly fixed to the adjacent end of the longer section and cooperatively engaging the hole.

3. The combination with a demountable rim divided into two sections and having means for holding the, free ends of the sections normally abutting each other, of a hinge uniting the opposite ends of the sections comprising a hole through .the end of one section having inclined side walls diverging outwardly and a In 'fastenedsto the end of the other scctio projecting therefrom and having an enlarged dovetailed extremity cooperatively engageable within the hole in the other section substantially as and for the purpose described.

In testimony whereof 'I hereunto aflix my signature in the presence of two witnesses.

ALLEN MENTZER. Witnesses W. H. DENHAM, S. Gno. SrnvnNs. 

